#include "btnode.h"
#include "btree.h"
#include "alloc.h"
+#include "dat.h"
-/**
- * struct nilfs_btree_path - A path on which B-tree operations are executed
- * @bp_bh: buffer head of node block
- * @bp_sib_bh: buffer head of sibling node block
- * @bp_index: index of child node
- * @bp_oldreq: ptr end request for old ptr
- * @bp_newreq: ptr alloc request for new ptr
- * @bp_op: rebalance operation
- */
-struct nilfs_btree_path {
- struct buffer_head *bp_bh;
- struct buffer_head *bp_sib_bh;
- int bp_index;
- union nilfs_bmap_ptr_req bp_oldreq;
- union nilfs_bmap_ptr_req bp_newreq;
- struct nilfs_btnode_chkey_ctxt bp_ctxt;
- void (*bp_op)(struct nilfs_btree *, struct nilfs_btree_path *,
- int, __u64 *, __u64 *);
-};
-
-/*
- * B-tree path operations
- */
-
-static struct kmem_cache *nilfs_btree_path_cache;
-
-int __init nilfs_btree_path_cache_init(void)
-{
- nilfs_btree_path_cache =
- kmem_cache_create("nilfs2_btree_path_cache",
- sizeof(struct nilfs_btree_path) *
- NILFS_BTREE_LEVEL_MAX, 0, 0, NULL);
- return (nilfs_btree_path_cache != NULL) ? 0 : -ENOMEM;
-}
-
-void nilfs_btree_path_cache_destroy(void)
-{
- kmem_cache_destroy(nilfs_btree_path_cache);
-}
-
-static inline struct nilfs_btree_path *
-nilfs_btree_alloc_path(const struct nilfs_btree *btree)
-{
- return (struct nilfs_btree_path *)
- kmem_cache_alloc(nilfs_btree_path_cache, GFP_NOFS);
-}
-
-static inline void nilfs_btree_free_path(const struct nilfs_btree *btree,
- struct nilfs_btree_path *path)
+static struct nilfs_btree_path *nilfs_btree_alloc_path(void)
{
- kmem_cache_free(nilfs_btree_path_cache, path);
-}
+ struct nilfs_btree_path *path;
+ int level = NILFS_BTREE_LEVEL_DATA;
-static void nilfs_btree_init_path(const struct nilfs_btree *btree,
- struct nilfs_btree_path *path)
-{
- int level;
+ path = kmem_cache_alloc(nilfs_btree_path_cache, GFP_NOFS);
+ if (path == NULL)
+ goto out;
- for (level = NILFS_BTREE_LEVEL_DATA;
- level < NILFS_BTREE_LEVEL_MAX;
- level++) {
+ for (; level < NILFS_BTREE_LEVEL_MAX; level++) {
path[level].bp_bh = NULL;
path[level].bp_sib_bh = NULL;
path[level].bp_index = 0;
path[level].bp_newreq.bpr_ptr = NILFS_BMAP_INVALID_PTR;
path[level].bp_op = NULL;
}
+
+out:
+ return path;
}
-static void nilfs_btree_clear_path(const struct nilfs_btree *btree,
- struct nilfs_btree_path *path)
+static void nilfs_btree_free_path(struct nilfs_btree_path *path)
{
- int level;
+ int level = NILFS_BTREE_LEVEL_DATA;
- for (level = NILFS_BTREE_LEVEL_DATA;
- level < NILFS_BTREE_LEVEL_MAX;
- level++) {
- if (path[level].bp_bh != NULL) {
- nilfs_bmap_put_block(&btree->bt_bmap,
- path[level].bp_bh);
- path[level].bp_bh = NULL;
- }
- /* sib_bh is released or deleted by prepare or commit
- * operations. */
- path[level].bp_sib_bh = NULL;
- path[level].bp_index = 0;
- path[level].bp_oldreq.bpr_ptr = NILFS_BMAP_INVALID_PTR;
- path[level].bp_newreq.bpr_ptr = NILFS_BMAP_INVALID_PTR;
- path[level].bp_op = NULL;
- }
-}
+ for (; level < NILFS_BTREE_LEVEL_MAX; level++)
+ brelse(path[level].bp_bh);
+ kmem_cache_free(nilfs_btree_path_cache, path);
+}
/*
* B-tree node operations
*/
+static int nilfs_btree_get_block(const struct nilfs_btree *btree, __u64 ptr,
+ struct buffer_head **bhp)
+{
+ struct address_space *btnc =
+ &NILFS_BMAP_I((struct nilfs_bmap *)btree)->i_btnode_cache;
+ int err;
+
+ err = nilfs_btnode_submit_block(btnc, ptr, 0, bhp);
+ if (err)
+ return err == -EEXIST ? 0 : err;
+
+ wait_on_buffer(*bhp);
+ if (!buffer_uptodate(*bhp)) {
+ brelse(*bhp);
+ return -EIO;
+ }
+ return 0;
+}
+
+static int nilfs_btree_get_new_block(const struct nilfs_btree *btree,
+ __u64 ptr, struct buffer_head **bhp)
+{
+ struct address_space *btnc =
+ &NILFS_BMAP_I((struct nilfs_bmap *)btree)->i_btnode_cache;
+ struct buffer_head *bh;
+
+ bh = nilfs_btnode_create_block(btnc, ptr);
+ if (!bh)
+ return -ENOMEM;
+
+ set_buffer_nilfs_volatile(bh);
+ *bhp = bh;
+ return 0;
+}
static inline int
-nilfs_btree_node_get_flags(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_get_flags(const struct nilfs_btree_node *node)
{
return node->bn_flags;
}
static inline void
-nilfs_btree_node_set_flags(struct nilfs_btree *btree,
- struct nilfs_btree_node *node,
- int flags)
+nilfs_btree_node_set_flags(struct nilfs_btree_node *node, int flags)
{
node->bn_flags = flags;
}
-static inline int nilfs_btree_node_root(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+static inline int nilfs_btree_node_root(const struct nilfs_btree_node *node)
{
- return nilfs_btree_node_get_flags(btree, node) & NILFS_BTREE_NODE_ROOT;
+ return nilfs_btree_node_get_flags(node) & NILFS_BTREE_NODE_ROOT;
}
static inline int
-nilfs_btree_node_get_level(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_get_level(const struct nilfs_btree_node *node)
{
return node->bn_level;
}
static inline void
-nilfs_btree_node_set_level(struct nilfs_btree *btree,
- struct nilfs_btree_node *node,
- int level)
+nilfs_btree_node_set_level(struct nilfs_btree_node *node, int level)
{
node->bn_level = level;
}
static inline int
-nilfs_btree_node_get_nchildren(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_get_nchildren(const struct nilfs_btree_node *node)
{
return le16_to_cpu(node->bn_nchildren);
}
static inline void
-nilfs_btree_node_set_nchildren(struct nilfs_btree *btree,
- struct nilfs_btree_node *node,
- int nchildren)
+nilfs_btree_node_set_nchildren(struct nilfs_btree_node *node, int nchildren)
{
node->bn_nchildren = cpu_to_le16(nchildren);
}
-static inline int
-nilfs_btree_node_size(const struct nilfs_btree *btree)
+static inline int nilfs_btree_node_size(const struct nilfs_btree *btree)
{
return 1 << btree->bt_bmap.b_inode->i_blkbits;
}
static inline int
-nilfs_btree_node_nchildren_min(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_nchildren_min(const struct nilfs_btree_node *node,
+ const struct nilfs_btree *btree)
{
- return nilfs_btree_node_root(btree, node) ?
+ return nilfs_btree_node_root(node) ?
NILFS_BTREE_ROOT_NCHILDREN_MIN :
NILFS_BTREE_NODE_NCHILDREN_MIN(nilfs_btree_node_size(btree));
}
static inline int
-nilfs_btree_node_nchildren_max(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_nchildren_max(const struct nilfs_btree_node *node,
+ const struct nilfs_btree *btree)
{
- return nilfs_btree_node_root(btree, node) ?
+ return nilfs_btree_node_root(node) ?
NILFS_BTREE_ROOT_NCHILDREN_MAX :
NILFS_BTREE_NODE_NCHILDREN_MAX(nilfs_btree_node_size(btree));
}
static inline __le64 *
-nilfs_btree_node_dkeys(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_dkeys(const struct nilfs_btree_node *node)
{
return (__le64 *)((char *)(node + 1) +
- (nilfs_btree_node_root(btree, node) ?
+ (nilfs_btree_node_root(node) ?
0 : NILFS_BTREE_NODE_EXTRA_PAD_SIZE));
}
static inline __le64 *
-nilfs_btree_node_dptrs(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node)
+nilfs_btree_node_dptrs(const struct nilfs_btree_node *node,
+ const struct nilfs_btree *btree)
{
- return (__le64 *)(nilfs_btree_node_dkeys(btree, node) +
- nilfs_btree_node_nchildren_max(btree, node));
+ return (__le64 *)(nilfs_btree_node_dkeys(node) +
+ nilfs_btree_node_nchildren_max(node, btree));
}
static inline __u64
-nilfs_btree_node_get_key(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node, int index)
+nilfs_btree_node_get_key(const struct nilfs_btree_node *node, int index)
{
- return nilfs_bmap_dkey_to_key(*(nilfs_btree_node_dkeys(btree, node) +
- index));
+ return nilfs_bmap_dkey_to_key(*(nilfs_btree_node_dkeys(node) + index));
}
static inline void
-nilfs_btree_node_set_key(struct nilfs_btree *btree,
- struct nilfs_btree_node *node, int index, __u64 key)
+nilfs_btree_node_set_key(struct nilfs_btree_node *node, int index, __u64 key)
{
- *(nilfs_btree_node_dkeys(btree, node) + index) =
- nilfs_bmap_key_to_dkey(key);
+ *(nilfs_btree_node_dkeys(node) + index) = nilfs_bmap_key_to_dkey(key);
}
static inline __u64
nilfs_btree_node_get_ptr(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node,
- int index)
+ const struct nilfs_btree_node *node, int index)
{
- return nilfs_bmap_dptr_to_ptr(*(nilfs_btree_node_dptrs(btree, node) +
+ return nilfs_bmap_dptr_to_ptr(*(nilfs_btree_node_dptrs(node, btree) +
index));
}
static inline void
nilfs_btree_node_set_ptr(struct nilfs_btree *btree,
- struct nilfs_btree_node *node,
- int index,
- __u64 ptr)
+ struct nilfs_btree_node *node, int index, __u64 ptr)
{
- *(nilfs_btree_node_dptrs(btree, node) + index) =
+ *(nilfs_btree_node_dptrs(node, btree) + index) =
nilfs_bmap_ptr_to_dptr(ptr);
}
__le64 *dptrs;
int i;
- nilfs_btree_node_set_flags(btree, node, flags);
- nilfs_btree_node_set_level(btree, node, level);
- nilfs_btree_node_set_nchildren(btree, node, nchildren);
+ nilfs_btree_node_set_flags(node, flags);
+ nilfs_btree_node_set_level(node, level);
+ nilfs_btree_node_set_nchildren(node, nchildren);
- dkeys = nilfs_btree_node_dkeys(btree, node);
- dptrs = nilfs_btree_node_dptrs(btree, node);
+ dkeys = nilfs_btree_node_dkeys(node);
+ dptrs = nilfs_btree_node_dptrs(node, btree);
for (i = 0; i < nchildren; i++) {
dkeys[i] = nilfs_bmap_key_to_dkey(keys[i]);
dptrs[i] = nilfs_bmap_ptr_to_dptr(ptrs[i]);
__le64 *ldptrs, *rdptrs;
int lnchildren, rnchildren;
- ldkeys = nilfs_btree_node_dkeys(btree, left);
- ldptrs = nilfs_btree_node_dptrs(btree, left);
- lnchildren = nilfs_btree_node_get_nchildren(btree, left);
+ ldkeys = nilfs_btree_node_dkeys(left);
+ ldptrs = nilfs_btree_node_dptrs(left, btree);
+ lnchildren = nilfs_btree_node_get_nchildren(left);
- rdkeys = nilfs_btree_node_dkeys(btree, right);
- rdptrs = nilfs_btree_node_dptrs(btree, right);
- rnchildren = nilfs_btree_node_get_nchildren(btree, right);
+ rdkeys = nilfs_btree_node_dkeys(right);
+ rdptrs = nilfs_btree_node_dptrs(right, btree);
+ rnchildren = nilfs_btree_node_get_nchildren(right);
memcpy(ldkeys + lnchildren, rdkeys, n * sizeof(*rdkeys));
memcpy(ldptrs + lnchildren, rdptrs, n * sizeof(*rdptrs));
lnchildren += n;
rnchildren -= n;
- nilfs_btree_node_set_nchildren(btree, left, lnchildren);
- nilfs_btree_node_set_nchildren(btree, right, rnchildren);
+ nilfs_btree_node_set_nchildren(left, lnchildren);
+ nilfs_btree_node_set_nchildren(right, rnchildren);
}
/* Assume that the buffer heads corresponding to left and right are locked. */
__le64 *ldptrs, *rdptrs;
int lnchildren, rnchildren;
- ldkeys = nilfs_btree_node_dkeys(btree, left);
- ldptrs = nilfs_btree_node_dptrs(btree, left);
- lnchildren = nilfs_btree_node_get_nchildren(btree, left);
+ ldkeys = nilfs_btree_node_dkeys(left);
+ ldptrs = nilfs_btree_node_dptrs(left, btree);
+ lnchildren = nilfs_btree_node_get_nchildren(left);
- rdkeys = nilfs_btree_node_dkeys(btree, right);
- rdptrs = nilfs_btree_node_dptrs(btree, right);
- rnchildren = nilfs_btree_node_get_nchildren(btree, right);
+ rdkeys = nilfs_btree_node_dkeys(right);
+ rdptrs = nilfs_btree_node_dptrs(right, btree);
+ rnchildren = nilfs_btree_node_get_nchildren(right);
memmove(rdkeys + n, rdkeys, rnchildren * sizeof(*rdkeys));
memmove(rdptrs + n, rdptrs, rnchildren * sizeof(*rdptrs));
lnchildren -= n;
rnchildren += n;
- nilfs_btree_node_set_nchildren(btree, left, lnchildren);
- nilfs_btree_node_set_nchildren(btree, right, rnchildren);
+ nilfs_btree_node_set_nchildren(left, lnchildren);
+ nilfs_btree_node_set_nchildren(right, rnchildren);
}
/* Assume that the buffer head corresponding to node is locked. */
__le64 *dptrs;
int nchildren;
- dkeys = nilfs_btree_node_dkeys(btree, node);
- dptrs = nilfs_btree_node_dptrs(btree, node);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
+ dkeys = nilfs_btree_node_dkeys(node);
+ dptrs = nilfs_btree_node_dptrs(node, btree);
+ nchildren = nilfs_btree_node_get_nchildren(node);
if (index < nchildren) {
memmove(dkeys + index + 1, dkeys + index,
(nchildren - index) * sizeof(*dkeys));
dkeys[index] = nilfs_bmap_key_to_dkey(key);
dptrs[index] = nilfs_bmap_ptr_to_dptr(ptr);
nchildren++;
- nilfs_btree_node_set_nchildren(btree, node, nchildren);
+ nilfs_btree_node_set_nchildren(node, nchildren);
}
/* Assume that the buffer head corresponding to node is locked. */
__le64 *dptrs;
int nchildren;
- dkeys = nilfs_btree_node_dkeys(btree, node);
- dptrs = nilfs_btree_node_dptrs(btree, node);
+ dkeys = nilfs_btree_node_dkeys(node);
+ dptrs = nilfs_btree_node_dptrs(node, btree);
key = nilfs_bmap_dkey_to_key(dkeys[index]);
ptr = nilfs_bmap_dptr_to_ptr(dptrs[index]);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
+ nchildren = nilfs_btree_node_get_nchildren(node);
if (keyp != NULL)
*keyp = key;
if (ptrp != NULL)
(nchildren - index - 1) * sizeof(*dptrs));
}
nchildren--;
- nilfs_btree_node_set_nchildren(btree, node, nchildren);
+ nilfs_btree_node_set_nchildren(node, nchildren);
}
-static int nilfs_btree_node_lookup(const struct nilfs_btree *btree,
- const struct nilfs_btree_node *node,
+static int nilfs_btree_node_lookup(const struct nilfs_btree_node *node,
__u64 key, int *indexp)
{
__u64 nkey;
/* binary search */
low = 0;
- high = nilfs_btree_node_get_nchildren(btree, node) - 1;
+ high = nilfs_btree_node_get_nchildren(node) - 1;
index = 0;
s = 0;
while (low <= high) {
index = (low + high) / 2;
- nkey = nilfs_btree_node_get_key(btree, node, index);
+ nkey = nilfs_btree_node_get_key(node, index);
if (nkey == key) {
s = 0;
goto out;
}
/* adjust index */
- if (nilfs_btree_node_get_level(btree, node) >
- NILFS_BTREE_LEVEL_NODE_MIN) {
- if ((s > 0) && (index > 0))
+ if (nilfs_btree_node_get_level(node) > NILFS_BTREE_LEVEL_NODE_MIN) {
+ if (s > 0 && index > 0)
index--;
} else if (s < 0)
index++;
out:
- BUG_ON(indexp == NULL);
*indexp = index;
return s == 0;
}
static inline struct nilfs_btree_node *
-nilfs_btree_get_nonroot_node(const struct nilfs_btree *btree,
- const struct nilfs_btree_path *path,
- int level)
+nilfs_btree_get_nonroot_node(const struct nilfs_btree_path *path, int level)
{
return (struct nilfs_btree_node *)path[level].bp_bh->b_data;
}
static inline struct nilfs_btree_node *
-nilfs_btree_get_sib_node(const struct nilfs_btree *btree,
- const struct nilfs_btree_path *path,
- int level)
+nilfs_btree_get_sib_node(const struct nilfs_btree_path *path, int level)
{
return (struct nilfs_btree_node *)path[level].bp_sib_bh->b_data;
}
static inline int nilfs_btree_height(const struct nilfs_btree *btree)
{
- return nilfs_btree_node_get_level(btree, nilfs_btree_get_root(btree))
- + 1;
+ return nilfs_btree_node_get_level(nilfs_btree_get_root(btree)) + 1;
}
static inline struct nilfs_btree_node *
{
return (level == nilfs_btree_height(btree) - 1) ?
nilfs_btree_get_root(btree) :
- nilfs_btree_get_nonroot_node(btree, path, level);
+ nilfs_btree_get_nonroot_node(path, level);
+}
+
+static inline int
+nilfs_btree_bad_node(struct nilfs_btree_node *node, int level)
+{
+ if (unlikely(nilfs_btree_node_get_level(node) != level)) {
+ dump_stack();
+ printk(KERN_CRIT "NILFS: btree level mismatch: %d != %d\n",
+ nilfs_btree_node_get_level(node), level);
+ return 1;
+ }
+ return 0;
}
static int nilfs_btree_do_lookup(const struct nilfs_btree *btree,
__u64 ptr;
int level, index, found, ret;
- BUG_ON(minlevel <= NILFS_BTREE_LEVEL_DATA);
-
node = nilfs_btree_get_root(btree);
- level = nilfs_btree_node_get_level(btree, node);
- if ((level < minlevel) ||
- (nilfs_btree_node_get_nchildren(btree, node) <= 0))
+ level = nilfs_btree_node_get_level(node);
+ if (level < minlevel || nilfs_btree_node_get_nchildren(node) <= 0)
return -ENOENT;
- found = nilfs_btree_node_lookup(btree, node, key, &index);
+ found = nilfs_btree_node_lookup(node, key, &index);
ptr = nilfs_btree_node_get_ptr(btree, node, index);
path[level].bp_bh = NULL;
path[level].bp_index = index;
for (level--; level >= minlevel; level--) {
- ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr,
- &path[level].bp_bh);
+ ret = nilfs_btree_get_block(btree, ptr, &path[level].bp_bh);
if (ret < 0)
return ret;
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- BUG_ON(level != nilfs_btree_node_get_level(btree, node));
+ node = nilfs_btree_get_nonroot_node(path, level);
+ if (nilfs_btree_bad_node(node, level))
+ return -EINVAL;
if (!found)
- found = nilfs_btree_node_lookup(btree, node, key,
- &index);
+ found = nilfs_btree_node_lookup(node, key, &index);
else
index = 0;
- if (index < nilfs_btree_node_nchildren_max(btree, node))
+ if (index < nilfs_btree_node_nchildren_max(node, btree))
ptr = nilfs_btree_node_get_ptr(btree, node, index);
else {
- BUG_ON(found || level != NILFS_BTREE_LEVEL_NODE_MIN);
+ WARN_ON(found || level != NILFS_BTREE_LEVEL_NODE_MIN);
/* insert */
ptr = NILFS_BMAP_INVALID_PTR;
}
int index, level, ret;
node = nilfs_btree_get_root(btree);
- index = nilfs_btree_node_get_nchildren(btree, node) - 1;
+ index = nilfs_btree_node_get_nchildren(node) - 1;
if (index < 0)
return -ENOENT;
- level = nilfs_btree_node_get_level(btree, node);
+ level = nilfs_btree_node_get_level(node);
ptr = nilfs_btree_node_get_ptr(btree, node, index);
path[level].bp_bh = NULL;
path[level].bp_index = index;
for (level--; level > 0; level--) {
- ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr,
- &path[level].bp_bh);
+ ret = nilfs_btree_get_block(btree, ptr, &path[level].bp_bh);
if (ret < 0)
return ret;
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- BUG_ON(level != nilfs_btree_node_get_level(btree, node));
- index = nilfs_btree_node_get_nchildren(btree, node) - 1;
+ node = nilfs_btree_get_nonroot_node(path, level);
+ if (nilfs_btree_bad_node(node, level))
+ return -EINVAL;
+ index = nilfs_btree_node_get_nchildren(node) - 1;
ptr = nilfs_btree_node_get_ptr(btree, node, index);
path[level].bp_index = index;
}
if (keyp != NULL)
- *keyp = nilfs_btree_node_get_key(btree, node, index);
+ *keyp = nilfs_btree_node_get_key(node, index);
if (ptrp != NULL)
*ptrp = ptr;
int ret;
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level);
if (ptrp != NULL)
*ptrp = ptr;
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
+
+ return ret;
+}
+
+static int nilfs_btree_lookup_contig(const struct nilfs_bmap *bmap,
+ __u64 key, __u64 *ptrp, unsigned maxblocks)
+{
+ struct nilfs_btree *btree = (struct nilfs_btree *)bmap;
+ struct nilfs_btree_path *path;
+ struct nilfs_btree_node *node;
+ struct inode *dat = NULL;
+ __u64 ptr, ptr2;
+ sector_t blocknr;
+ int level = NILFS_BTREE_LEVEL_NODE_MIN;
+ int ret, cnt, index, maxlevel;
+
+ path = nilfs_btree_alloc_path();
+ if (path == NULL)
+ return -ENOMEM;
+
+ ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level);
+ if (ret < 0)
+ goto out;
+
+ if (NILFS_BMAP_USE_VBN(bmap)) {
+ dat = nilfs_bmap_get_dat(bmap);
+ ret = nilfs_dat_translate(dat, ptr, &blocknr);
+ if (ret < 0)
+ goto out;
+ ptr = blocknr;
+ }
+ cnt = 1;
+ if (cnt == maxblocks)
+ goto end;
+
+ maxlevel = nilfs_btree_height(btree) - 1;
+ node = nilfs_btree_get_node(btree, path, level);
+ index = path[level].bp_index + 1;
+ for (;;) {
+ while (index < nilfs_btree_node_get_nchildren(node)) {
+ if (nilfs_btree_node_get_key(node, index) !=
+ key + cnt)
+ goto end;
+ ptr2 = nilfs_btree_node_get_ptr(btree, node, index);
+ if (dat) {
+ ret = nilfs_dat_translate(dat, ptr2, &blocknr);
+ if (ret < 0)
+ goto out;
+ ptr2 = blocknr;
+ }
+ if (ptr2 != ptr + cnt || ++cnt == maxblocks)
+ goto end;
+ index++;
+ continue;
+ }
+ if (level == maxlevel)
+ break;
+
+ /* look-up right sibling node */
+ node = nilfs_btree_get_node(btree, path, level + 1);
+ index = path[level + 1].bp_index + 1;
+ if (index >= nilfs_btree_node_get_nchildren(node) ||
+ nilfs_btree_node_get_key(node, index) != key + cnt)
+ break;
+ ptr2 = nilfs_btree_node_get_ptr(btree, node, index);
+ path[level + 1].bp_index = index;
+ brelse(path[level].bp_bh);
+ path[level].bp_bh = NULL;
+ ret = nilfs_btree_get_block(btree, ptr2, &path[level].bp_bh);
+ if (ret < 0)
+ goto out;
+ node = nilfs_btree_get_nonroot_node(path, level);
+ index = 0;
+ path[level].bp_index = index;
+ }
+ end:
+ *ptrp = ptr;
+ ret = cnt;
+ out:
+ nilfs_btree_free_path(path);
return ret;
}
{
if (level < nilfs_btree_height(btree) - 1) {
do {
- lock_buffer(path[level].bp_bh);
nilfs_btree_node_set_key(
- btree,
- nilfs_btree_get_nonroot_node(
- btree, path, level),
+ nilfs_btree_get_nonroot_node(path, level),
path[level].bp_index, key);
if (!buffer_dirty(path[level].bp_bh))
nilfs_btnode_mark_dirty(path[level].bp_bh);
- unlock_buffer(path[level].bp_bh);
} while ((path[level].bp_index == 0) &&
(++level < nilfs_btree_height(btree) - 1));
}
/* root */
if (level == nilfs_btree_height(btree) - 1) {
- nilfs_btree_node_set_key(btree,
- nilfs_btree_get_root(btree),
+ nilfs_btree_node_set_key(nilfs_btree_get_root(btree),
path[level].bp_index, key);
}
}
struct nilfs_btree_node *node;
if (level < nilfs_btree_height(btree) - 1) {
- lock_buffer(path[level].bp_bh);
- node = nilfs_btree_get_nonroot_node(btree, path, level);
+ node = nilfs_btree_get_nonroot_node(path, level);
nilfs_btree_node_insert(btree, node, *keyp, *ptrp,
path[level].bp_index);
if (!buffer_dirty(path[level].bp_bh))
nilfs_btnode_mark_dirty(path[level].bp_bh);
- unlock_buffer(path[level].bp_bh);
if (path[level].bp_index == 0)
nilfs_btree_promote_key(btree, path, level + 1,
- nilfs_btree_node_get_key(
- btree, node, 0));
+ nilfs_btree_node_get_key(node,
+ 0));
} else {
node = nilfs_btree_get_root(btree);
nilfs_btree_node_insert(btree, node, *keyp, *ptrp,
struct nilfs_btree_node *node, *left;
int nchildren, lnchildren, n, move;
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
-
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- left = nilfs_btree_get_sib_node(btree, path, level);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
- lnchildren = nilfs_btree_node_get_nchildren(btree, left);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ left = nilfs_btree_get_sib_node(path, level);
+ nchildren = nilfs_btree_node_get_nchildren(node);
+ lnchildren = nilfs_btree_node_get_nchildren(left);
move = 0;
n = (nchildren + lnchildren + 1) / 2 - lnchildren;
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
nilfs_btree_promote_key(btree, path, level + 1,
- nilfs_btree_node_get_key(btree, node, 0));
+ nilfs_btree_node_get_key(node, 0));
if (move) {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
path[level].bp_index += lnchildren;
path[level + 1].bp_index--;
} else {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
path[level].bp_index -= n;
}
struct nilfs_btree_node *node, *right;
int nchildren, rnchildren, n, move;
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
-
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- right = nilfs_btree_get_sib_node(btree, path, level);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
- rnchildren = nilfs_btree_node_get_nchildren(btree, right);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ right = nilfs_btree_get_sib_node(path, level);
+ nchildren = nilfs_btree_node_get_nchildren(node);
+ rnchildren = nilfs_btree_node_get_nchildren(right);
move = 0;
n = (nchildren + rnchildren + 1) / 2 - rnchildren;
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
path[level + 1].bp_index++;
nilfs_btree_promote_key(btree, path, level + 1,
- nilfs_btree_node_get_key(btree, right, 0));
+ nilfs_btree_node_get_key(right, 0));
path[level + 1].bp_index--;
if (move) {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
- path[level].bp_index -=
- nilfs_btree_node_get_nchildren(btree, node);
+ path[level].bp_index -= nilfs_btree_node_get_nchildren(node);
path[level + 1].bp_index++;
} else {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
}
__u64 newptr;
int nchildren, n, move;
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
-
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- right = nilfs_btree_get_sib_node(btree, path, level);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ right = nilfs_btree_get_sib_node(path, level);
+ nchildren = nilfs_btree_node_get_nchildren(node);
move = 0;
n = (nchildren + 1) / 2;
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
- newkey = nilfs_btree_node_get_key(btree, right, 0);
+ newkey = nilfs_btree_node_get_key(right, 0);
newptr = path[level].bp_newreq.bpr_ptr;
if (move) {
- path[level].bp_index -=
- nilfs_btree_node_get_nchildren(btree, node);
+ path[level].bp_index -= nilfs_btree_node_get_nchildren(node);
nilfs_btree_node_insert(btree, right, *keyp, *ptrp,
path[level].bp_index);
- *keyp = nilfs_btree_node_get_key(btree, right, 0);
+ *keyp = nilfs_btree_node_get_key(right, 0);
*ptrp = path[level].bp_newreq.bpr_ptr;
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_bh);
+ brelse(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
} else {
nilfs_btree_do_insert(btree, path, level, keyp, ptrp);
- *keyp = nilfs_btree_node_get_key(btree, right, 0);
+ *keyp = nilfs_btree_node_get_key(right, 0);
*ptrp = path[level].bp_newreq.bpr_ptr;
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
}
struct nilfs_btree_node *root, *child;
int n;
- lock_buffer(path[level].bp_sib_bh);
-
root = nilfs_btree_get_root(btree);
- child = nilfs_btree_get_sib_node(btree, path, level);
+ child = nilfs_btree_get_sib_node(path, level);
- n = nilfs_btree_node_get_nchildren(btree, root);
+ n = nilfs_btree_node_get_nchildren(root);
nilfs_btree_node_move_right(btree, root, child, n);
- nilfs_btree_node_set_level(btree, root, level + 1);
+ nilfs_btree_node_set_level(root, level + 1);
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
nilfs_btree_do_insert(btree, path, level, keyp, ptrp);
- *keyp = nilfs_btree_node_get_key(btree, child, 0);
+ *keyp = nilfs_btree_node_get_key(child, 0);
*ptrp = path[level].bp_newreq.bpr_ptr;
}
struct nilfs_btree_node *node, *parent, *sib;
__u64 sibptr;
int pindex, level, ret;
+ struct inode *dat = NULL;
stats->bs_nblocks = 0;
level = NILFS_BTREE_LEVEL_DATA;
/* allocate a new ptr for data block */
- if (btree->bt_ops->btop_find_target != NULL)
+ if (NILFS_BMAP_USE_VBN(&btree->bt_bmap)) {
path[level].bp_newreq.bpr_ptr =
- (*btree->bt_ops->btop_find_target)(btree, path, key);
+ nilfs_btree_find_target_v(btree, path, key);
+ dat = nilfs_bmap_get_dat(&btree->bt_bmap);
+ }
- ret = (*btree->bt_bmap.b_pops->bpop_prepare_alloc_ptr)(
- &btree->bt_bmap, &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq, dat);
if (ret < 0)
goto err_out_data;
for (level = NILFS_BTREE_LEVEL_NODE_MIN;
level < nilfs_btree_height(btree) - 1;
level++) {
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- if (nilfs_btree_node_get_nchildren(btree, node) <
- nilfs_btree_node_nchildren_max(btree, node)) {
+ node = nilfs_btree_get_nonroot_node(path, level);
+ if (nilfs_btree_node_get_nchildren(node) <
+ nilfs_btree_node_nchildren_max(node, btree)) {
path[level].bp_op = nilfs_btree_do_insert;
stats->bs_nblocks++;
goto out;
if (pindex > 0) {
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex - 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_child_node;
sib = (struct nilfs_btree_node *)bh->b_data;
- if (nilfs_btree_node_get_nchildren(btree, sib) <
- nilfs_btree_node_nchildren_max(btree, sib)) {
+ if (nilfs_btree_node_get_nchildren(sib) <
+ nilfs_btree_node_nchildren_max(sib, btree)) {
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_carry_left;
stats->bs_nblocks++;
goto out;
} else
- nilfs_bmap_put_block(&btree->bt_bmap, bh);
+ brelse(bh);
}
/* right sibling */
if (pindex <
- nilfs_btree_node_get_nchildren(btree, parent) - 1) {
+ nilfs_btree_node_get_nchildren(parent) - 1) {
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex + 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_child_node;
sib = (struct nilfs_btree_node *)bh->b_data;
- if (nilfs_btree_node_get_nchildren(btree, sib) <
- nilfs_btree_node_nchildren_max(btree, sib)) {
+ if (nilfs_btree_node_get_nchildren(sib) <
+ nilfs_btree_node_nchildren_max(sib, btree)) {
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_carry_right;
stats->bs_nblocks++;
goto out;
} else
- nilfs_bmap_put_block(&btree->bt_bmap, bh);
+ brelse(bh);
}
/* split */
path[level].bp_newreq.bpr_ptr =
path[level - 1].bp_newreq.bpr_ptr + 1;
- ret = (*btree->bt_bmap.b_pops->bpop_prepare_alloc_ptr)(
- &btree->bt_bmap, &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq, dat);
if (ret < 0)
goto err_out_child_node;
- ret = nilfs_bmap_get_new_block(&btree->bt_bmap,
- path[level].bp_newreq.bpr_ptr,
- &bh);
+ ret = nilfs_btree_get_new_block(btree,
+ path[level].bp_newreq.bpr_ptr,
+ &bh);
if (ret < 0)
goto err_out_curr_node;
stats->bs_nblocks++;
- lock_buffer(bh);
nilfs_btree_node_init(btree,
(struct nilfs_btree_node *)bh->b_data,
0, level, 0, NULL, NULL);
- unlock_buffer(bh);
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_split;
}
/* root */
node = nilfs_btree_get_root(btree);
- if (nilfs_btree_node_get_nchildren(btree, node) <
- nilfs_btree_node_nchildren_max(btree, node)) {
+ if (nilfs_btree_node_get_nchildren(node) <
+ nilfs_btree_node_nchildren_max(node, btree)) {
path[level].bp_op = nilfs_btree_do_insert;
stats->bs_nblocks++;
goto out;
/* grow */
path[level].bp_newreq.bpr_ptr = path[level - 1].bp_newreq.bpr_ptr + 1;
- ret = (*btree->bt_bmap.b_pops->bpop_prepare_alloc_ptr)(
- &btree->bt_bmap, &path[level].bp_newreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq, dat);
if (ret < 0)
goto err_out_child_node;
- ret = nilfs_bmap_get_new_block(&btree->bt_bmap,
- path[level].bp_newreq.bpr_ptr, &bh);
+ ret = nilfs_btree_get_new_block(btree, path[level].bp_newreq.bpr_ptr,
+ &bh);
if (ret < 0)
goto err_out_curr_node;
- lock_buffer(bh);
nilfs_btree_node_init(btree, (struct nilfs_btree_node *)bh->b_data,
0, level, 0, NULL, NULL);
- unlock_buffer(bh);
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_grow;
/* error */
err_out_curr_node:
- (*btree->bt_bmap.b_pops->bpop_abort_alloc_ptr)(&btree->bt_bmap,
- &path[level].bp_newreq);
+ nilfs_bmap_abort_alloc_ptr(&btree->bt_bmap, &path[level].bp_newreq,
+ dat);
err_out_child_node:
for (level--; level > NILFS_BTREE_LEVEL_DATA; level--) {
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_sib_bh);
- (*btree->bt_bmap.b_pops->bpop_abort_alloc_ptr)(
- &btree->bt_bmap, &path[level].bp_newreq);
+ nilfs_btnode_delete(path[level].bp_sib_bh);
+ nilfs_bmap_abort_alloc_ptr(&btree->bt_bmap,
+ &path[level].bp_newreq, dat);
}
- (*btree->bt_bmap.b_pops->bpop_abort_alloc_ptr)(&btree->bt_bmap,
- &path[level].bp_newreq);
+ nilfs_bmap_abort_alloc_ptr(&btree->bt_bmap, &path[level].bp_newreq,
+ dat);
err_out_data:
*levelp = level;
stats->bs_nblocks = 0;
struct nilfs_btree_path *path,
int maxlevel, __u64 key, __u64 ptr)
{
+ struct inode *dat = NULL;
int level;
set_buffer_nilfs_volatile((struct buffer_head *)((unsigned long)ptr));
ptr = path[NILFS_BTREE_LEVEL_DATA].bp_newreq.bpr_ptr;
- if (btree->bt_ops->btop_set_target != NULL)
- (*btree->bt_ops->btop_set_target)(btree, key, ptr);
+ if (NILFS_BMAP_USE_VBN(&btree->bt_bmap)) {
+ nilfs_btree_set_target_v(btree, key, ptr);
+ dat = nilfs_bmap_get_dat(&btree->bt_bmap);
+ }
for (level = NILFS_BTREE_LEVEL_NODE_MIN; level <= maxlevel; level++) {
- if (btree->bt_bmap.b_pops->bpop_commit_alloc_ptr != NULL) {
- (*btree->bt_bmap.b_pops->bpop_commit_alloc_ptr)(
- &btree->bt_bmap, &path[level - 1].bp_newreq);
- }
- (*path[level].bp_op)(btree, path, level, &key, &ptr);
+ nilfs_bmap_commit_alloc_ptr(&btree->bt_bmap,
+ &path[level - 1].bp_newreq, dat);
+ path[level].bp_op(btree, path, level, &key, &ptr);
}
if (!nilfs_bmap_dirty(&btree->bt_bmap))
int level, ret;
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
ret = nilfs_btree_do_lookup(btree, path, key, NULL,
NILFS_BTREE_LEVEL_NODE_MIN);
nilfs_bmap_add_blocks(bmap, stats.bs_nblocks);
out:
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
return ret;
}
struct nilfs_btree_node *node;
if (level < nilfs_btree_height(btree) - 1) {
- lock_buffer(path[level].bp_bh);
- node = nilfs_btree_get_nonroot_node(btree, path, level);
+ node = nilfs_btree_get_nonroot_node(path, level);
nilfs_btree_node_delete(btree, node, keyp, ptrp,
path[level].bp_index);
if (!buffer_dirty(path[level].bp_bh))
nilfs_btnode_mark_dirty(path[level].bp_bh);
- unlock_buffer(path[level].bp_bh);
if (path[level].bp_index == 0)
nilfs_btree_promote_key(btree, path, level + 1,
- nilfs_btree_node_get_key(btree, node, 0));
+ nilfs_btree_node_get_key(node, 0));
} else {
node = nilfs_btree_get_root(btree);
nilfs_btree_node_delete(btree, node, keyp, ptrp,
nilfs_btree_do_delete(btree, path, level, keyp, ptrp);
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
-
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- left = nilfs_btree_get_sib_node(btree, path, level);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
- lnchildren = nilfs_btree_node_get_nchildren(btree, left);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ left = nilfs_btree_get_sib_node(path, level);
+ nchildren = nilfs_btree_node_get_nchildren(node);
+ lnchildren = nilfs_btree_node_get_nchildren(left);
n = (nchildren + lnchildren) / 2 - nchildren;
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
nilfs_btree_promote_key(btree, path, level + 1,
- nilfs_btree_node_get_key(btree, node, 0));
+ nilfs_btree_node_get_key(node, 0));
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
path[level].bp_index += n;
}
nilfs_btree_do_delete(btree, path, level, keyp, ptrp);
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
-
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- right = nilfs_btree_get_sib_node(btree, path, level);
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
- rnchildren = nilfs_btree_node_get_nchildren(btree, right);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ right = nilfs_btree_get_sib_node(path, level);
+ nchildren = nilfs_btree_node_get_nchildren(node);
+ rnchildren = nilfs_btree_node_get_nchildren(right);
n = (nchildren + rnchildren) / 2 - nchildren;
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
path[level + 1].bp_index++;
nilfs_btree_promote_key(btree, path, level + 1,
- nilfs_btree_node_get_key(btree, right, 0));
+ nilfs_btree_node_get_key(right, 0));
path[level + 1].bp_index--;
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ brelse(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
}
nilfs_btree_do_delete(btree, path, level, keyp, ptrp);
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
-
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- left = nilfs_btree_get_sib_node(btree, path, level);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ left = nilfs_btree_get_sib_node(path, level);
- n = nilfs_btree_node_get_nchildren(btree, node);
+ n = nilfs_btree_node_get_nchildren(node);
nilfs_btree_node_move_left(btree, left, node, n);
if (!buffer_dirty(path[level].bp_sib_bh))
nilfs_btnode_mark_dirty(path[level].bp_sib_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_bh);
+ nilfs_btnode_delete(path[level].bp_bh);
path[level].bp_bh = path[level].bp_sib_bh;
path[level].bp_sib_bh = NULL;
- path[level].bp_index += nilfs_btree_node_get_nchildren(btree, left);
+ path[level].bp_index += nilfs_btree_node_get_nchildren(left);
}
static void nilfs_btree_concat_right(struct nilfs_btree *btree,
nilfs_btree_do_delete(btree, path, level, keyp, ptrp);
- lock_buffer(path[level].bp_bh);
- lock_buffer(path[level].bp_sib_bh);
+ node = nilfs_btree_get_nonroot_node(path, level);
+ right = nilfs_btree_get_sib_node(path, level);
- node = nilfs_btree_get_nonroot_node(btree, path, level);
- right = nilfs_btree_get_sib_node(btree, path, level);
-
- n = nilfs_btree_node_get_nchildren(btree, right);
+ n = nilfs_btree_node_get_nchildren(right);
nilfs_btree_node_move_left(btree, node, right, n);
if (!buffer_dirty(path[level].bp_bh))
nilfs_btnode_mark_dirty(path[level].bp_bh);
- unlock_buffer(path[level].bp_bh);
- unlock_buffer(path[level].bp_sib_bh);
-
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_sib_bh);
+ nilfs_btnode_delete(path[level].bp_sib_bh);
path[level].bp_sib_bh = NULL;
path[level + 1].bp_index++;
}
nilfs_btree_do_delete(btree, path, level, keyp, ptrp);
- lock_buffer(path[level].bp_bh);
root = nilfs_btree_get_root(btree);
- child = nilfs_btree_get_nonroot_node(btree, path, level);
+ child = nilfs_btree_get_nonroot_node(path, level);
nilfs_btree_node_delete(btree, root, NULL, NULL, 0);
- nilfs_btree_node_set_level(btree, root, level);
- n = nilfs_btree_node_get_nchildren(btree, child);
+ nilfs_btree_node_set_level(root, level);
+ n = nilfs_btree_node_get_nchildren(child);
nilfs_btree_node_move_left(btree, root, child, n);
- unlock_buffer(path[level].bp_bh);
- nilfs_bmap_delete_block(&btree->bt_bmap, path[level].bp_bh);
+ nilfs_btnode_delete(path[level].bp_bh);
path[level].bp_bh = NULL;
}
static int nilfs_btree_prepare_delete(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
int *levelp,
- struct nilfs_bmap_stats *stats)
+ struct nilfs_bmap_stats *stats,
+ struct inode *dat)
{
struct buffer_head *bh;
struct nilfs_btree_node *node, *parent, *sib;
for (level = NILFS_BTREE_LEVEL_NODE_MIN;
level < nilfs_btree_height(btree) - 1;
level++) {
- node = nilfs_btree_get_nonroot_node(btree, path, level);
+ node = nilfs_btree_get_nonroot_node(path, level);
path[level].bp_oldreq.bpr_ptr =
nilfs_btree_node_get_ptr(btree, node,
path[level].bp_index);
- if (btree->bt_bmap.b_pops->bpop_prepare_end_ptr != NULL) {
- ret = (*btree->bt_bmap.b_pops->bpop_prepare_end_ptr)(
- &btree->bt_bmap, &path[level].bp_oldreq);
- if (ret < 0)
- goto err_out_child_node;
- }
+ ret = nilfs_bmap_prepare_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq, dat);
+ if (ret < 0)
+ goto err_out_child_node;
- if (nilfs_btree_node_get_nchildren(btree, node) >
- nilfs_btree_node_nchildren_min(btree, node)) {
+ if (nilfs_btree_node_get_nchildren(node) >
+ nilfs_btree_node_nchildren_min(node, btree)) {
path[level].bp_op = nilfs_btree_do_delete;
stats->bs_nblocks++;
goto out;
/* left sibling */
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex - 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_curr_node;
sib = (struct nilfs_btree_node *)bh->b_data;
- if (nilfs_btree_node_get_nchildren(btree, sib) >
- nilfs_btree_node_nchildren_min(btree, sib)) {
+ if (nilfs_btree_node_get_nchildren(sib) >
+ nilfs_btree_node_nchildren_min(sib, btree)) {
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_borrow_left;
stats->bs_nblocks++;
/* continue; */
}
} else if (pindex <
- nilfs_btree_node_get_nchildren(btree, parent) - 1) {
+ nilfs_btree_node_get_nchildren(parent) - 1) {
/* right sibling */
sibptr = nilfs_btree_node_get_ptr(btree, parent,
pindex + 1);
- ret = nilfs_bmap_get_block(&btree->bt_bmap, sibptr,
- &bh);
+ ret = nilfs_btree_get_block(btree, sibptr, &bh);
if (ret < 0)
goto err_out_curr_node;
sib = (struct nilfs_btree_node *)bh->b_data;
- if (nilfs_btree_node_get_nchildren(btree, sib) >
- nilfs_btree_node_nchildren_min(btree, sib)) {
+ if (nilfs_btree_node_get_nchildren(sib) >
+ nilfs_btree_node_nchildren_min(sib, btree)) {
path[level].bp_sib_bh = bh;
path[level].bp_op = nilfs_btree_borrow_right;
stats->bs_nblocks++;
} else {
/* no siblings */
/* the only child of the root node */
- BUG_ON(level != nilfs_btree_height(btree) - 2);
- if (nilfs_btree_node_get_nchildren(btree, node) - 1 <=
+ WARN_ON(level != nilfs_btree_height(btree) - 2);
+ if (nilfs_btree_node_get_nchildren(node) - 1 <=
NILFS_BTREE_ROOT_NCHILDREN_MAX) {
path[level].bp_op = nilfs_btree_shrink;
stats->bs_nblocks += 2;
node = nilfs_btree_get_root(btree);
path[level].bp_oldreq.bpr_ptr =
nilfs_btree_node_get_ptr(btree, node, path[level].bp_index);
- if (btree->bt_bmap.b_pops->bpop_prepare_end_ptr != NULL) {
- ret = (*btree->bt_bmap.b_pops->bpop_prepare_end_ptr)(
- &btree->bt_bmap, &path[level].bp_oldreq);
- if (ret < 0)
- goto err_out_child_node;
- }
+
+ ret = nilfs_bmap_prepare_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq, dat);
+ if (ret < 0)
+ goto err_out_child_node;
+
/* child of the root node is deleted */
path[level].bp_op = nilfs_btree_do_delete;
stats->bs_nblocks++;
/* error */
err_out_curr_node:
- if (btree->bt_bmap.b_pops->bpop_abort_end_ptr != NULL)
- (*btree->bt_bmap.b_pops->bpop_abort_end_ptr)(
- &btree->bt_bmap, &path[level].bp_oldreq);
+ nilfs_bmap_abort_end_ptr(&btree->bt_bmap, &path[level].bp_oldreq, dat);
err_out_child_node:
for (level--; level >= NILFS_BTREE_LEVEL_NODE_MIN; level--) {
- nilfs_bmap_put_block(&btree->bt_bmap, path[level].bp_sib_bh);
- if (btree->bt_bmap.b_pops->bpop_abort_end_ptr != NULL)
- (*btree->bt_bmap.b_pops->bpop_abort_end_ptr)(
- &btree->bt_bmap, &path[level].bp_oldreq);
+ brelse(path[level].bp_sib_bh);
+ nilfs_bmap_abort_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq, dat);
}
*levelp = level;
stats->bs_nblocks = 0;
static void nilfs_btree_commit_delete(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int maxlevel)
+ int maxlevel, struct inode *dat)
{
int level;
for (level = NILFS_BTREE_LEVEL_NODE_MIN; level <= maxlevel; level++) {
- if (btree->bt_bmap.b_pops->bpop_commit_end_ptr != NULL)
- (*btree->bt_bmap.b_pops->bpop_commit_end_ptr)(
- &btree->bt_bmap, &path[level].bp_oldreq);
- (*path[level].bp_op)(btree, path, level, NULL, NULL);
+ nilfs_bmap_commit_end_ptr(&btree->bt_bmap,
+ &path[level].bp_oldreq, dat);
+ path[level].bp_op(btree, path, level, NULL, NULL);
}
if (!nilfs_bmap_dirty(&btree->bt_bmap))
struct nilfs_btree *btree;
struct nilfs_btree_path *path;
struct nilfs_bmap_stats stats;
+ struct inode *dat;
int level, ret;
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
+
ret = nilfs_btree_do_lookup(btree, path, key, NULL,
NILFS_BTREE_LEVEL_NODE_MIN);
if (ret < 0)
goto out;
- ret = nilfs_btree_prepare_delete(btree, path, &level, &stats);
+
+ dat = NILFS_BMAP_USE_VBN(&btree->bt_bmap) ?
+ nilfs_bmap_get_dat(&btree->bt_bmap) : NULL;
+
+ ret = nilfs_btree_prepare_delete(btree, path, &level, &stats, dat);
if (ret < 0)
goto out;
- nilfs_btree_commit_delete(btree, path, level);
+ nilfs_btree_commit_delete(btree, path, level, dat);
nilfs_bmap_sub_blocks(bmap, stats.bs_nblocks);
out:
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
return ret;
}
int ret;
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
ret = nilfs_btree_do_lookup_last(btree, path, keyp, NULL);
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
return ret;
}
node = root;
break;
case 3:
- nchildren = nilfs_btree_node_get_nchildren(btree, root);
+ nchildren = nilfs_btree_node_get_nchildren(root);
if (nchildren > 1)
return 0;
ptr = nilfs_btree_node_get_ptr(btree, root, nchildren - 1);
- ret = nilfs_bmap_get_block(bmap, ptr, &bh);
+ ret = nilfs_btree_get_block(btree, ptr, &bh);
if (ret < 0)
return ret;
node = (struct nilfs_btree_node *)bh->b_data;
return 0;
}
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
- maxkey = nilfs_btree_node_get_key(btree, node, nchildren - 1);
+ nchildren = nilfs_btree_node_get_nchildren(node);
+ maxkey = nilfs_btree_node_get_key(node, nchildren - 1);
nextmaxkey = (nchildren > 1) ?
- nilfs_btree_node_get_key(btree, node, nchildren - 2) : 0;
+ nilfs_btree_node_get_key(node, nchildren - 2) : 0;
if (bh != NULL)
- nilfs_bmap_put_block(bmap, bh);
+ brelse(bh);
- return (maxkey == key) && (nextmaxkey < bmap->b_low);
+ return (maxkey == key) && (nextmaxkey < NILFS_BMAP_LARGE_LOW);
}
static int nilfs_btree_gather_data(struct nilfs_bmap *bmap,
node = root;
break;
case 3:
- nchildren = nilfs_btree_node_get_nchildren(btree, root);
- BUG_ON(nchildren > 1);
+ nchildren = nilfs_btree_node_get_nchildren(root);
+ WARN_ON(nchildren > 1);
ptr = nilfs_btree_node_get_ptr(btree, root, nchildren - 1);
- ret = nilfs_bmap_get_block(bmap, ptr, &bh);
+ ret = nilfs_btree_get_block(btree, ptr, &bh);
if (ret < 0)
return ret;
node = (struct nilfs_btree_node *)bh->b_data;
break;
default:
node = NULL;
- BUG();
+ return -EINVAL;
}
- nchildren = nilfs_btree_node_get_nchildren(btree, node);
+ nchildren = nilfs_btree_node_get_nchildren(node);
if (nchildren < nitems)
nitems = nchildren;
- dkeys = nilfs_btree_node_dkeys(btree, node);
- dptrs = nilfs_btree_node_dptrs(btree, node);
+ dkeys = nilfs_btree_node_dkeys(node);
+ dptrs = nilfs_btree_node_dptrs(node, btree);
for (i = 0; i < nitems; i++) {
keys[i] = nilfs_bmap_dkey_to_key(dkeys[i]);
ptrs[i] = nilfs_bmap_dptr_to_ptr(dptrs[i]);
}
if (bh != NULL)
- nilfs_bmap_put_block(bmap, bh);
+ brelse(bh);
return nitems;
}
struct nilfs_bmap_stats *stats)
{
struct buffer_head *bh;
- struct nilfs_btree *btree;
+ struct nilfs_btree *btree = (struct nilfs_btree *)bmap;
+ struct inode *dat = NULL;
int ret;
- btree = (struct nilfs_btree *)bmap;
stats->bs_nblocks = 0;
/* for data */
/* cannot find near ptr */
- if (btree->bt_ops->btop_find_target != NULL)
- dreq->bpr_ptr
- = (*btree->bt_ops->btop_find_target)(btree, NULL, key);
- ret = (*bmap->b_pops->bpop_prepare_alloc_ptr)(bmap, dreq);
+ if (NILFS_BMAP_USE_VBN(bmap)) {
+ dreq->bpr_ptr = nilfs_btree_find_target_v(btree, NULL, key);
+ dat = nilfs_bmap_get_dat(bmap);
+ }
+
+ ret = nilfs_bmap_prepare_alloc_ptr(bmap, dreq, dat);
if (ret < 0)
return ret;
stats->bs_nblocks++;
if (nreq != NULL) {
nreq->bpr_ptr = dreq->bpr_ptr + 1;
- ret = (*bmap->b_pops->bpop_prepare_alloc_ptr)(bmap, nreq);
+ ret = nilfs_bmap_prepare_alloc_ptr(bmap, nreq, dat);
if (ret < 0)
goto err_out_dreq;
- ret = nilfs_bmap_get_new_block(bmap, nreq->bpr_ptr, &bh);
+ ret = nilfs_btree_get_new_block(btree, nreq->bpr_ptr, &bh);
if (ret < 0)
goto err_out_nreq;
/* error */
err_out_nreq:
- (*bmap->b_pops->bpop_abort_alloc_ptr)(bmap, nreq);
+ nilfs_bmap_abort_alloc_ptr(bmap, nreq, dat);
err_out_dreq:
- (*bmap->b_pops->bpop_abort_alloc_ptr)(bmap, dreq);
+ nilfs_bmap_abort_alloc_ptr(bmap, dreq, dat);
stats->bs_nblocks = 0;
return ret;
nilfs_btree_commit_convert_and_insert(struct nilfs_bmap *bmap,
__u64 key, __u64 ptr,
const __u64 *keys, const __u64 *ptrs,
- int n, __u64 low, __u64 high,
+ int n,
union nilfs_bmap_ptr_req *dreq,
union nilfs_bmap_ptr_req *nreq,
struct buffer_head *bh)
{
- struct nilfs_btree *btree;
+ struct nilfs_btree *btree = (struct nilfs_btree *)bmap;
struct nilfs_btree_node *node;
+ struct inode *dat;
__u64 tmpptr;
/* free resources */
if (bmap->b_ops->bop_clear != NULL)
- (*bmap->b_ops->bop_clear)(bmap);
+ bmap->b_ops->bop_clear(bmap);
/* ptr must be a pointer to a buffer head. */
set_buffer_nilfs_volatile((struct buffer_head *)((unsigned long)ptr));
/* convert and insert */
- btree = (struct nilfs_btree *)bmap;
- nilfs_btree_init(bmap, low, high);
+ dat = NILFS_BMAP_USE_VBN(bmap) ? nilfs_bmap_get_dat(bmap) : NULL;
+ nilfs_btree_init(bmap);
if (nreq != NULL) {
- if (bmap->b_pops->bpop_commit_alloc_ptr != NULL) {
- (*bmap->b_pops->bpop_commit_alloc_ptr)(bmap, dreq);
- (*bmap->b_pops->bpop_commit_alloc_ptr)(bmap, nreq);
- }
+ nilfs_bmap_commit_alloc_ptr(bmap, dreq, dat);
+ nilfs_bmap_commit_alloc_ptr(bmap, nreq, dat);
/* create child node at level 1 */
- lock_buffer(bh);
node = (struct nilfs_btree_node *)bh->b_data;
nilfs_btree_node_init(btree, node, 0, 1, n, keys, ptrs);
nilfs_btree_node_insert(btree, node,
if (!nilfs_bmap_dirty(bmap))
nilfs_bmap_set_dirty(bmap);
- unlock_buffer(bh);
- nilfs_bmap_put_block(bmap, bh);
+ brelse(bh);
/* create root node at level 2 */
node = nilfs_btree_get_root(btree);
nilfs_btree_node_init(btree, node, NILFS_BTREE_NODE_ROOT,
2, 1, &keys[0], &tmpptr);
} else {
- if (bmap->b_pops->bpop_commit_alloc_ptr != NULL)
- (*bmap->b_pops->bpop_commit_alloc_ptr)(bmap, dreq);
+ nilfs_bmap_commit_alloc_ptr(bmap, dreq, dat);
/* create root node at level 1 */
node = nilfs_btree_get_root(btree);
nilfs_bmap_set_dirty(bmap);
}
- if (btree->bt_ops->btop_set_target != NULL)
- (*btree->bt_ops->btop_set_target)(btree, key, dreq->bpr_ptr);
+ if (NILFS_BMAP_USE_VBN(bmap))
+ nilfs_btree_set_target_v(btree, key, dreq->bpr_ptr);
}
/**
* @keys:
* @ptrs:
* @n:
- * @low:
- * @high:
*/
int nilfs_btree_convert_and_insert(struct nilfs_bmap *bmap,
__u64 key, __u64 ptr,
- const __u64 *keys, const __u64 *ptrs,
- int n, __u64 low, __u64 high)
+ const __u64 *keys, const __u64 *ptrs, int n)
{
struct buffer_head *bh;
union nilfs_bmap_ptr_req dreq, nreq, *di, *ni;
if (ret < 0)
return ret;
nilfs_btree_commit_convert_and_insert(bmap, key, ptr, keys, ptrs, n,
- low, high, di, ni, bh);
+ di, ni, bh);
nilfs_bmap_add_blocks(bmap, stats.bs_nblocks);
return 0;
}
static int nilfs_btree_prepare_update_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int level)
+ int level, struct inode *dat)
{
struct nilfs_btree_node *parent;
int ret;
nilfs_btree_node_get_ptr(btree, parent,
path[level + 1].bp_index);
path[level].bp_newreq.bpr_ptr = path[level].bp_oldreq.bpr_ptr + 1;
- ret = nilfs_bmap_prepare_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ ret = nilfs_dat_prepare_update(dat, &path[level].bp_oldreq.bpr_req,
+ &path[level].bp_newreq.bpr_req);
if (ret < 0)
return ret;
&NILFS_BMAP_I(&btree->bt_bmap)->i_btnode_cache,
&path[level].bp_ctxt);
if (ret < 0) {
- nilfs_bmap_abort_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ nilfs_dat_abort_update(dat,
+ &path[level].bp_oldreq.bpr_req,
+ &path[level].bp_newreq.bpr_req);
return ret;
}
}
static void nilfs_btree_commit_update_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int level)
+ int level, struct inode *dat)
{
struct nilfs_btree_node *parent;
- nilfs_bmap_commit_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ nilfs_dat_commit_update(dat, &path[level].bp_oldreq.bpr_req,
+ &path[level].bp_newreq.bpr_req,
+ btree->bt_bmap.b_ptr_type == NILFS_BMAP_PTR_VS);
if (buffer_nilfs_node(path[level].bp_bh)) {
nilfs_btnode_commit_change_key(
static void nilfs_btree_abort_update_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int level)
+ int level, struct inode *dat)
{
- nilfs_bmap_abort_update(&btree->bt_bmap,
- &path[level].bp_oldreq,
- &path[level].bp_newreq);
+ nilfs_dat_abort_update(dat, &path[level].bp_oldreq.bpr_req,
+ &path[level].bp_newreq.bpr_req);
if (buffer_nilfs_node(path[level].bp_bh))
nilfs_btnode_abort_change_key(
&NILFS_BMAP_I(&btree->bt_bmap)->i_btnode_cache,
static int nilfs_btree_prepare_propagate_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int minlevel,
- int *maxlevelp)
+ int minlevel, int *maxlevelp,
+ struct inode *dat)
{
int level, ret;
level = minlevel;
if (!buffer_nilfs_volatile(path[level].bp_bh)) {
- ret = nilfs_btree_prepare_update_v(btree, path, level);
+ ret = nilfs_btree_prepare_update_v(btree, path, level, dat);
if (ret < 0)
return ret;
}
while ((++level < nilfs_btree_height(btree) - 1) &&
!buffer_dirty(path[level].bp_bh)) {
- BUG_ON(buffer_nilfs_volatile(path[level].bp_bh));
- ret = nilfs_btree_prepare_update_v(btree, path, level);
+ WARN_ON(buffer_nilfs_volatile(path[level].bp_bh));
+ ret = nilfs_btree_prepare_update_v(btree, path, level, dat);
if (ret < 0)
goto out;
}
/* success */
- BUG_ON(maxlevelp == NULL);
*maxlevelp = level - 1;
return 0;
/* error */
out:
while (--level > minlevel)
- nilfs_btree_abort_update_v(btree, path, level);
+ nilfs_btree_abort_update_v(btree, path, level, dat);
if (!buffer_nilfs_volatile(path[level].bp_bh))
- nilfs_btree_abort_update_v(btree, path, level);
+ nilfs_btree_abort_update_v(btree, path, level, dat);
return ret;
}
static void nilfs_btree_commit_propagate_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int minlevel,
- int maxlevel,
- struct buffer_head *bh)
+ int minlevel, int maxlevel,
+ struct buffer_head *bh,
+ struct inode *dat)
{
int level;
if (!buffer_nilfs_volatile(path[minlevel].bp_bh))
- nilfs_btree_commit_update_v(btree, path, minlevel);
+ nilfs_btree_commit_update_v(btree, path, minlevel, dat);
for (level = minlevel + 1; level <= maxlevel; level++)
- nilfs_btree_commit_update_v(btree, path, level);
+ nilfs_btree_commit_update_v(btree, path, level, dat);
}
static int nilfs_btree_propagate_v(struct nilfs_btree *btree,
struct nilfs_btree_path *path,
- int level,
- struct buffer_head *bh)
+ int level, struct buffer_head *bh)
{
- int maxlevel, ret;
+ int maxlevel = 0, ret;
struct nilfs_btree_node *parent;
+ struct inode *dat = nilfs_bmap_get_dat(&btree->bt_bmap);
__u64 ptr;
get_bh(bh);
path[level].bp_bh = bh;
- ret = nilfs_btree_prepare_propagate_v(btree, path, level, &maxlevel);
+ ret = nilfs_btree_prepare_propagate_v(btree, path, level, &maxlevel,
+ dat);
if (ret < 0)
goto out;
parent = nilfs_btree_get_node(btree, path, level + 1);
ptr = nilfs_btree_node_get_ptr(btree, parent,
path[level + 1].bp_index);
- ret = nilfs_bmap_mark_dirty(&btree->bt_bmap, ptr);
+ ret = nilfs_dat_mark_dirty(dat, ptr);
if (ret < 0)
goto out;
}
- nilfs_btree_commit_propagate_v(btree, path, level, maxlevel, bh);
+ nilfs_btree_commit_propagate_v(btree, path, level, maxlevel, bh, dat);
out:
brelse(path[level].bp_bh);
__u64 key;
int level, ret;
- BUG_ON(!buffer_dirty(bh));
+ WARN_ON(!buffer_dirty(bh));
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
if (buffer_nilfs_node(bh)) {
node = (struct nilfs_btree_node *)bh->b_data;
- key = nilfs_btree_node_get_key(btree, node, 0);
- level = nilfs_btree_node_get_level(btree, node);
+ key = nilfs_btree_node_get_key(node, 0);
+ level = nilfs_btree_node_get_level(node);
} else {
key = nilfs_bmap_data_get_key(bmap, bh);
level = NILFS_BTREE_LEVEL_DATA;
ret = nilfs_btree_do_lookup(btree, path, key, NULL, level + 1);
if (ret < 0) {
- /* BUG_ON(ret == -ENOENT); */
- if (ret == -ENOENT) {
+ if (unlikely(ret == -ENOENT))
printk(KERN_CRIT "%s: key = %llu, level == %d\n",
__func__, (unsigned long long)key, level);
- BUG();
- }
goto out;
}
- ret = (*btree->bt_ops->btop_propagate)(btree, path, level, bh);
+ ret = NILFS_BMAP_USE_VBN(bmap) ?
+ nilfs_btree_propagate_v(btree, path, level, bh) :
+ nilfs_btree_propagate_p(btree, path, level, bh);
out:
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
return ret;
}
static int nilfs_btree_propagate_gc(const struct nilfs_bmap *bmap,
struct buffer_head *bh)
{
- return nilfs_bmap_mark_dirty(bmap, bh->b_blocknr);
+ return nilfs_dat_mark_dirty(nilfs_bmap_get_dat(bmap), bh->b_blocknr);
}
static void nilfs_btree_add_dirty_buffer(struct nilfs_btree *btree,
get_bh(bh);
node = (struct nilfs_btree_node *)bh->b_data;
- key = nilfs_btree_node_get_key(btree, node, 0);
- level = nilfs_btree_node_get_level(btree, node);
+ key = nilfs_btree_node_get_key(node, 0);
+ level = nilfs_btree_node_get_level(node);
list_for_each(head, &lists[level]) {
cbh = list_entry(head, struct buffer_head, b_assoc_buffers);
cnode = (struct nilfs_btree_node *)cbh->b_data;
- ckey = nilfs_btree_node_get_key(btree, cnode, 0);
+ ckey = nilfs_btree_node_get_key(cnode, 0);
if (key < ckey)
break;
}
for (level = NILFS_BTREE_LEVEL_NODE_MIN;
level < NILFS_BTREE_LEVEL_MAX;
level++)
- list_splice(&lists[level], listp->prev);
+ list_splice_tail(&lists[level], listp);
}
static int nilfs_btree_assign_p(struct nilfs_btree *btree,
nilfs_btree_node_set_ptr(btree, parent,
path[level + 1].bp_index, blocknr);
- key = nilfs_btree_node_get_key(btree, parent,
- path[level + 1].bp_index);
+ key = nilfs_btree_node_get_key(parent, path[level + 1].bp_index);
/* on-disk format */
binfo->bi_dat.bi_blkoff = nilfs_bmap_key_to_dkey(key);
binfo->bi_dat.bi_level = level;
union nilfs_binfo *binfo)
{
struct nilfs_btree_node *parent;
+ struct inode *dat = nilfs_bmap_get_dat(&btree->bt_bmap);
__u64 key;
__u64 ptr;
union nilfs_bmap_ptr_req req;
ptr = nilfs_btree_node_get_ptr(btree, parent,
path[level + 1].bp_index);
req.bpr_ptr = ptr;
- ret = (*btree->bt_bmap.b_pops->bpop_prepare_start_ptr)(&btree->bt_bmap,
- &req);
+ ret = nilfs_dat_prepare_start(dat, &req.bpr_req);
if (ret < 0)
return ret;
- (*btree->bt_bmap.b_pops->bpop_commit_start_ptr)(&btree->bt_bmap,
- &req, blocknr);
+ nilfs_dat_commit_start(dat, &req.bpr_req, blocknr);
- key = nilfs_btree_node_get_key(btree, parent,
- path[level + 1].bp_index);
+ key = nilfs_btree_node_get_key(parent, path[level + 1].bp_index);
/* on-disk format */
binfo->bi_v.bi_vblocknr = nilfs_bmap_ptr_to_dptr(ptr);
binfo->bi_v.bi_blkoff = nilfs_bmap_key_to_dkey(key);
int level, ret;
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
if (buffer_nilfs_node(*bh)) {
node = (struct nilfs_btree_node *)(*bh)->b_data;
- key = nilfs_btree_node_get_key(btree, node, 0);
- level = nilfs_btree_node_get_level(btree, node);
+ key = nilfs_btree_node_get_key(node, 0);
+ level = nilfs_btree_node_get_level(node);
} else {
key = nilfs_bmap_data_get_key(bmap, *bh);
level = NILFS_BTREE_LEVEL_DATA;
ret = nilfs_btree_do_lookup(btree, path, key, NULL, level + 1);
if (ret < 0) {
- BUG_ON(ret == -ENOENT);
+ WARN_ON(ret == -ENOENT);
goto out;
}
- ret = (*btree->bt_ops->btop_assign)(btree, path, level, bh,
- blocknr, binfo);
+ ret = NILFS_BMAP_USE_VBN(bmap) ?
+ nilfs_btree_assign_v(btree, path, level, bh, blocknr, binfo) :
+ nilfs_btree_assign_p(btree, path, level, bh, blocknr, binfo);
out:
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
return ret;
}
sector_t blocknr,
union nilfs_binfo *binfo)
{
- struct nilfs_btree *btree;
struct nilfs_btree_node *node;
__u64 key;
int ret;
- btree = (struct nilfs_btree *)bmap;
- ret = nilfs_bmap_move_v(bmap, (*bh)->b_blocknr, blocknr);
+ ret = nilfs_dat_move(nilfs_bmap_get_dat(bmap), (*bh)->b_blocknr,
+ blocknr);
if (ret < 0)
return ret;
if (buffer_nilfs_node(*bh)) {
node = (struct nilfs_btree_node *)(*bh)->b_data;
- key = nilfs_btree_node_get_key(btree, node, 0);
+ key = nilfs_btree_node_get_key(node, 0);
} else
key = nilfs_bmap_data_get_key(bmap, *bh);
int ret;
btree = (struct nilfs_btree *)bmap;
- path = nilfs_btree_alloc_path(btree);
+ path = nilfs_btree_alloc_path();
if (path == NULL)
return -ENOMEM;
- nilfs_btree_init_path(btree, path);
ret = nilfs_btree_do_lookup(btree, path, key, &ptr, level + 1);
if (ret < 0) {
- BUG_ON(ret == -ENOENT);
+ WARN_ON(ret == -ENOENT);
goto out;
}
- ret = nilfs_bmap_get_block(&btree->bt_bmap, ptr, &bh);
+ ret = nilfs_btree_get_block(btree, ptr, &bh);
if (ret < 0) {
- BUG_ON(ret == -ENOENT);
+ WARN_ON(ret == -ENOENT);
goto out;
}
if (!buffer_dirty(bh))
nilfs_btnode_mark_dirty(bh);
- nilfs_bmap_put_block(&btree->bt_bmap, bh);
+ brelse(bh);
if (!nilfs_bmap_dirty(&btree->bt_bmap))
nilfs_bmap_set_dirty(&btree->bt_bmap);
out:
- nilfs_btree_clear_path(btree, path);
- nilfs_btree_free_path(btree, path);
+ nilfs_btree_free_path(path);
return ret;
}
static const struct nilfs_bmap_operations nilfs_btree_ops = {
.bop_lookup = nilfs_btree_lookup,
+ .bop_lookup_contig = nilfs_btree_lookup_contig,
.bop_insert = nilfs_btree_insert,
.bop_delete = nilfs_btree_delete,
.bop_clear = NULL,
static const struct nilfs_bmap_operations nilfs_btree_ops_gc = {
.bop_lookup = NULL,
+ .bop_lookup_contig = NULL,
.bop_insert = NULL,
.bop_delete = NULL,
.bop_clear = NULL,
.bop_gather_data = NULL,
};
-static const struct nilfs_btree_operations nilfs_btree_ops_v = {
- .btop_find_target = nilfs_btree_find_target_v,
- .btop_set_target = nilfs_btree_set_target_v,
- .btop_propagate = nilfs_btree_propagate_v,
- .btop_assign = nilfs_btree_assign_v,
-};
-
-static const struct nilfs_btree_operations nilfs_btree_ops_p = {
- .btop_find_target = NULL,
- .btop_set_target = NULL,
- .btop_propagate = nilfs_btree_propagate_p,
- .btop_assign = nilfs_btree_assign_p,
-};
-
-int nilfs_btree_init(struct nilfs_bmap *bmap, __u64 low, __u64 high)
+int nilfs_btree_init(struct nilfs_bmap *bmap)
{
- struct nilfs_btree *btree;
-
- btree = (struct nilfs_btree *)bmap;
bmap->b_ops = &nilfs_btree_ops;
- bmap->b_low = low;
- bmap->b_high = high;
- switch (bmap->b_inode->i_ino) {
- case NILFS_DAT_INO:
- btree->bt_ops = &nilfs_btree_ops_p;
- break;
- default:
- btree->bt_ops = &nilfs_btree_ops_v;
- break;
- }
-
return 0;
}
void nilfs_btree_init_gc(struct nilfs_bmap *bmap)
{
- bmap->b_low = NILFS_BMAP_LARGE_LOW;
- bmap->b_high = NILFS_BMAP_LARGE_HIGH;
bmap->b_ops = &nilfs_btree_ops_gc;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff